Font Family Not installed on machine give exception

Hi

     I am using external XML  for plotting text through TLF.

If XML contain the fontFamily (like Bauhaus 93) which is not installed on my machine then it give an exception

Error #2161: An internal error occured while laying out the text.

If anyone know please let me know

Error: Error #2161: An internal error occured while laying out the text.
    at flash.text.engine::TextBlock/DoCreateTextLine()
    at flash.text.engine::TextBlock/createTextLine()
    at flashx.textLayout.compose::FlowComposerBase/createTextLine()
    at flashx.textLayout.compose::ComposeState/createTextLine()
    at flashx.textLayout.compose::ComposeState/composeNextLine()
    at flashx.textLayout.compose::BaseCompose/composeParagraphElement()
    at flashx.textLayout.compose::BaseCompose/composeBlockElement()
    at flashx.textLayout.compose::BaseCompose/composeInternal()
    at flashx.textLayout.compose::ComposeState/composeInternal()
    at flashx.textLayout.compose::BaseCompose/composeTextFlow()
    at flashx.textLayout.compose::ComposeState/composeTextFlow()
    at flashx.textLayout.compose::StandardFlowComposer/http://ns.adobe.com/textLayout/internal/2008::callTheComposer()
    at flashx.textLayout.compose::StandardFlowComposer/internalCompose()
    at flashx.textLayout.compose::StandardFlowComposer/composeToController()
    at flashx.textLayout.compose::StandardFlowComposer/updateToController()
    at flashx.textLayout.compose::StandardFlowComposer/updateAllControllers()